Process of making paper-walled cans.



B. K.. roan. PROCESS OF MAKING P APER WALLED' CANS.-

APPLICATION FILED SEPLZO, l9l 2.

Patented June 27, 1916.

nn'rnorr, MICHIGAN, ASSIGNOR T nn'rnorr can COMPANY, or :on'rnorr,MICHIGAN, a conronsrron or NEW JiinsnY.

ma KING roan, or

rnoosss or Mannie PAPER-WALLED cans.

invention consists in the series of steps or I the method of coating thepaper,

' on one side with melted asphaltum or other I act's done, ashereinafter more fully set forth and made the subject matter of claim.

In the accompanying drawing which forms a part of this specification,Figure 1 is a diagrammatic side. elevation to illustrate of which areformed, with the fused cement and applying the supplemental 2 is a planView of the Fig. 4,

the walls adhesive, lining sheet thereto; Fig. of the-same; Fig. 3 aside elevation winding mandrel and heating table; a planof said mandreland table; a sectibn of the winding mandrel; Fig. 6, a View of the woundproduct before being cut up into lengths; and Fig. 7,-a fragmentarysection if the wound product, upon an enlarged scale, to illustrate thec0nstruction.

In practising this process for the manu facture'of cansor vesselssuitable for holding milk or other food products, a. long sheet ofpaper,which may consist of ordinary cheap, turpentine log pulp paper,and which should be of a width several times the circumference ofthecylindrical ves-' sci or can that is tobe produced, is coated similarfusible cement adhesive. On one edge of this coated sheet is laid uponthe fused cement and pressed thereon a narrower strip of lining paper,preferably hard finish sulfite spruce pulp paper, subsequently bebrought into contact with milkorother food product without imparting anytaste thereto, which strip is to constitute the lining of'the walls ofthe can or vessel to be produced. This composite sheet, consisting ofthe sheet of cheap paper coated on one side with the fused cement andcarrying the narrower sheet of lining paper adherent thereto, is cutinto' short lengths equal-to .alength-of the" intended can or a.multiple .of that length. After the c ement-has become cold and hard,these of which the following which may I v, Specification of LettersPatent. Patented June 2'7, 1916. Application filed September 20, 1912.Serie1No.721,360.

shorter lengths, the cement being reheated,-

are, each one, to be wound upon a mandrel in such manner as to bring thelining sheet next to the mandrel which it should com.- pletelyencircle,- the continued winding bringing the remainder of the coatedsheet upon the mandrel with its cemented side toward the already woundportion until all is wound. .The tube thus formed, if not already ofproper length for the walls of a can, is cut to such proper after, sheetmetal ends are applied and crimped. to the walls so formed, and theproduct will be a can or vessel suitable for containing any food productor milk, and also of such constitution that'the contents may pose ofsterilization or processing without destroying the vessel or injuringthe contents.

in said drawing, A represents the material out of which the coated sheetis to be formed.

B is a tank of melted asphaltum or cement, B showing the cement itself.

0 is a roller turning in the melted cement.

the mandrel L, which length, and there-.

be heated in the can itself for the purlining paper fed over the roll Eonto the paper sheet A and K is a heated" table .upon which thesheet Aand its adarelaid preparatory be provided with the ordinary M is-aheating roll between which and the. mandrel L the paper is held whilebeing w'ound upon the latter.

In Fig. 7, -A- are paper, F is the'inner layer of lining paper 1 and'Bthe intercalated-layers of.fusible.ce- "ment orasphaltum.

I claim i e 1. The process vof making paper walled vessels, whichconsistsv in first forming a;

the outer laye'rs of one margin of the sheet and leaves exposed theremainder of said Coating, and then winding said composite sheet withthe lining material on theinside around a mandrel, while the cement isin a fused condition.

2. The process of making paper tubes,

which consists in coating a long, wide strip of paper wlth fuse-dcement, unlting thereto by nieans; of said cement along one edge anarrow strip of lining paper, cutting the composite sheet so formed intotransverse smaller sheets and thereafter reheating the coatingof cementand winding the smaller sheets upon a mandrel.

3'. The herein described process which. consists 1I1 coating a web offibrous material with a moisture-proof fusible cementland applying to. amargin of the'sheet over the said coating a strip ,of materialadapted'to form a lining, and'whic'h-leaves exposed the remainder ofsaid coating, and then winding the composite member thus'formed with thelining material on the inside, and during the winding step applying heatto thereby fuse the cement.

4;. The. process 0 which consists in coat'ng a long wide sheet makingpaper tubesof paper with fused cement, uniting thereto by means of saidcement along one edge a narrow strip of lining paper, and-thereafterreheating the coating of cement and winding the composite sheet upon amandrel so that the edge of the lining paper which extends across themedian portion of the sheet shall be substantially parallel with theaxis of the mandrel and so that the lining paper shall be in contactwith the mandrel and form the interior surface of the tube.

5; The process of making tubes which consists in passing a strip ofpaper in a direction pa 'allel withits length and coating the same withfused cement; uniting thereto by means-of said cement along one edge anarrow strip of lining paper which covers a portion of the said cement;then passing the composite sheet so formed in a direction transverse tothe first mentioned direction at the same time reheating the fusedcement, and winding the said composite sheet upon agnandrel so that thesaid lining paper covers the mandrel and keeps the fused ce ment out ofcontact with the mandrel, the fused cement being caused to adhereto theback of the composite sheet where it comes in contact with the same.

BEN KING FORE,

Witnesses:

PEARL ABRAMs, ESTHER ABRAM-s.

